(... is a kind of skin ) the rind of a lemon

(... is a kind of skin ) the rind of an orange

(... is part of skin) edible reproductive body of a seed plant especially one having sweet flesh

Definition 6: a member of any of several British or American groups consisting predominantly of young people who shave their heads; some engage in white supremacist and anti-immigrant activities and this leads to the perception that all skinheads are racist and violent - [noun denoting person]

Synonyms for skin in the sense of this definition

(skin is a kind of ...) a cruel and brutal fellow

(... is a member of skin) a youth subculture that appeared first in England in the late 1960s as a working-class reaction to the hippies; hair was cropped close to the scalp; wore work-shirts and short jeans (supported by suspenders) and heavy red boots; involved in attacks against Asians and football hooliganism